# The Air Navigation (Overseas Territories) Order 2013, Paragraph 27: Flight within controlled airspace

Extent: E+W+S+N.I.

(1) Subject to paragraphs (2) and (3), an aircraft flying within Class B, Class C, Class D or Class E airspace—
(a) at or above flight level 100 must remain at least 1,500 metres horizontally and 1,000 feet vertically away from cloud and in a flight visibility of at least 8 km;
(b) below flight level 100 must remain at least 1,500 metres horizontally and 1,000 feet vertically away from cloud and in a flight visibility of at least 5 km.
(2) An aircraft is deemed to have complied with paragraph (1)(b) if—
(a) the aircraft is not a helicopter and it—
(i) flies at or below 3,000 feet above mean sea level;
(ii) flies at a speed which, according to its airspeed indicator, is 140 knots or less; and
(iii) remains clear of cloud, with the surface in sight and in a flight visibility of at least 5 km; or
(b) the aircraft is a helicopter and it—
(i) flies at or below 3,000 feet above mean sea level; and
(ii) remains clear of cloud, with the surface in sight and in a flight visibility of at least 1,500 metres.
(3) Paragraph (1) does not apply to a helicopter that is air-taxiing or conducting manoeuvres in accordance with rule 6(i).

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Source: https://www.legislation.gov.uk/uksi/2013/2870/schedule/4/paragraph/27 (the official version)
Page: https://openlegislation.uk/air-navigation-overseas-territories-order-2013/schedule-4/paragraph-27
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.